31000300002 has 48 divisors (see below), whose sum is σ = 78837325632. Its totient is φ = 8617842720.

The previous prime is 31000299991. The next prime is 31000300007. The reversal of 31000300002 is 20000300013.

It is a happy number.

It is a super-2 number, since 2×31000300002² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (31000300007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3320124 + ... + 3329447.

It is an arithmetic number, because the mean of its divisors is an integer number (1642444284).

Almost surely, 2^31000300002 is an apocalyptic number.

31000300002 is an abundant number, since it is smaller than the sum of its proper divisors (47837025630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31000300002 is a wasteful number, since it uses less digits than its factorization.

31000300002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649623 (or 6649620 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 31000300002 its reverse (20000300013), we get a palindrome (51000600015).

The spelling of 31000300002 in words is "thirty-one billion, three hundred thousand, two".